Rainbow StackerBaby will love stacking, nesting and pouring these stunning rainbow cups. They will learn cause and effect through play in water, sand or simply on your living room floor! Development Skills Colour Recognition Hand Eye and Co ordination Shape Recall Texture Touching and Gripping Water Play Play Guide 6+ months Show your infant how to stack the cups biggest first Have fun building together but also knocking them over! Be expressive with your language.